(+)-(2R,5R)-5-Chloro-1-[2-(hydroxymethyl)-1,3-oxathiolan-5-yl]cytosine 145986-28-3 2(1H)-Pyrimidinone, 4-amino-5-chloro-1-[2-(hydroxymethyl)-1,3-oxathiolan-5-yl]-, (2R-trans)- AIDS-004785 AIDS004785 Oxathiolan 5ClC-.a.